First would probably be the Four Star. SIG kits, and instructions, are really good. There are several build threads for this kit, and so many have built it that help is easy to find if you do get stuck.

Second would be the Tiger. It could probably be a great first build also but I agree with waiting on building with retracts. I don't know anyone who has built this kit.

Two people in our club have Ventures. Both say it is the finest kit they have ever built, and both of them have been building (kits or cutting their own from plans) for more than 30 years. It would be my third choice because I'd rather make my "rookie" mistakes on something that's not a discontinued item. I would "save" it until I was confident of doing a really god job on the build.